Question

What is estimation method of talking out cube root with an example ​

Answer 1

Answer:

Estimating Cube Root, this method will work only if the given number is a perfect cube. ... ( if the unit digit of the cube is 6 then the unit digit of cube root will also 6 as 6 x 6 x 6 = 36). Step III : Find the cube of numbers between which the 2nd group lie. Step IV : Take the smaller number as its ten's digit.

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example;

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The first group will give us the unit's digit of the required cube root. The number 791 ends in 1 therefore the last digit will be 1 because unit's digit is 1 only when the cube root also ends with 1. ... We take the smaller value therefore the digit at tenth place is 3.

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